NVIDIA GeForce GT 645 OEM vs AMD Radeon R9 295X2

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon R9 295X2

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 4GB VRAM Radeon R9 295X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 500W)

AMD Radeon R9 295X2 's Advantages

Released 2 years late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (320.0GB/s vs 91.87GB/s)

2528 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

Radeon R9 295X2 +541%

5.733 TFLOPS

GeForce GT 645 OEM

VS

Radeon R9 295X2

Graphics Card

Apr 2012

Release Date

Apr 2014

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

957 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

512bit

91.87GB/s

Bandwidth

320.0GB/s

Render Config

-

Compute Units

44

6

SM Count

-

288

Shading Units

2816

48

TMUs

176

24

ROPs

64

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

1024 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

65.15 GPixel/s

37.25 GTexel/s

Texture Rate

179.2 GTexel/s

-

894.0 GFLOPS

FP32 (float)

5.733 TFLOPS

74.50 GFLOPS

FP64 (double)

716.7 GFLOPS

Board Design

102W

TDP

500W

300 W

Suggested PSU

900 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 4x mini-DisplayPort 1.2

-

Power Connectors

2x 8-pin

Graphics Processor

GF114

GPU Name

Vesuvius

-

GPU Variant

Vesuvius XT (215-0852022)

Fermi 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.95 billion

Transistors

6.2 billion

332 mm²

Die Size

438 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

6.3

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